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Vishay General Semiconductor - Diodes Division SMCG24A-M3/57T
- Part No.:
- SMCG24A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24A-M3/57T.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,889
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Product details
Overview
SMCG24A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in DO-215AB (SMCG) package, with 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.6 A peak pulse current (IPPM), 38.9 V clamping voltage (VC), and 1500 W peak pulse power (PPPM). It protects MOSFETs, ICs, and sensor signal lines in automotive power electronics against inductive switching transients.
For engineers reviewing the SMCG24A-M3/57T datasheet, SMCG24A-M3/57T pinout, SMCG24A-M3/57T application, or SMCG24A-M3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and bidirectional variant compatibility for robust ESD/surge protection design.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, responding to transients within picoseconds via avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5 % typical), low incremental surge resistance, and repeatable clamping performance under 10/1000 µs waveform stress.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 200 A non-repetitive forward surge (IFSM), and maintains operation across -55 °C to +150 °C junction temperature range - critical for under-hood automotive modules and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V rail protection. |
| VBR @ IT = 1 mA | 26.7–29.5 V - breakdown onset range; ensures reliable turn-on above normal system overvoltage but below IC absolute max ratings. |
| VC @ IPPM | 38.9 V - clamped voltage at 38.6 A peak pulse; limits downstream voltage stress during 10/1000 µs surge events. |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform; enables protection against high-energy load dump or inductive kick. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on 8 mm × 8 mm copper pads; informs heatsinking requirements for sustained surge duty cycles. |
| IEC 61000-4-5 | Compliant - validated for surge immunity testing up to 4 kV line-to-ground (per standard test conditions); supports industrial and automotive EMC certification. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including HTOL, TC, and UHAST; suitable for engine control units and ADAS sensor interfaces. |
Pinout & Package
Package: DO-215AB (SMCG) - low-profile, gull-wing surface-mount outline with matte tin-plated leads; 0.220–0.245 inch body length, 0.115–0.125 inch width, 0.024–0.040 inch height; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events; polarity marking essential for unidirectional operation. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path; must maintain low-inductance layout to preserve response speed. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, humidity bias, and high-temperature operating life - eliminates need for additional qualification testing. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets global environmental regulations without compromising surge robustness; compatible with lead-free reflow profiles up to 260 °C peak. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 12.2 V) versus competing TVS devices, reducing voltage overshoot on protected ICs during fast transients. |
| MSL Level 1 moisture sensitivity | Zero dry-pack requirement; can be stored indefinitely at ambient conditions and placed directly into SMT line without baking. |
| Glass-passivated junction | Provides stable leakage (<1 µA at VWM), consistent VBR tolerance, and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from alternator load dump and relay coil flyback in 24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 24 V supply and ground, triggered within <1 ns to clamp spikes up to ±100 V. Use Value: Limits voltage seen by MCU and transceiver to ≤38.9 V during 1500 W surges, preventing latch-up or gate oxide damage while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding analog input channels of PLC analog modules from field-wiring induced transients in factory automation environments. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V sensor supply line, absorbing repetitive 10/1000 µs surges from solenoid switching and EMI coupling. Use Value: Withstands >1000 surge events at rated PPPM while maintaining <1 µA leakage at 24 V, ensuring signal integrity and long-term calibration stability. |
| Automotive ADAS Camera Power Input | Telecom Remote Radio Unit (RRU) DC Feed |
Use Scenario: Shielding 12 V power input of surround-view camera modules from battery voltage transients during cold-crank and jump-start conditions. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and downstream LDO to meet ISO 7637-2 Pulse 5a/b immunity. Use Value: Clamps 100 V transients down to 38.9 V within nanoseconds, enabling use of cost-effective 40 V-rated input capacitors and regulators without derating. | Use Scenario: Protecting 48 V DC power feed lines to outdoor 5G RRUs from lightning-induced surges entering via tower grounding loops. IC Role / Device Role / Timing Role: First-stage TVS on DC input before DC-DC converter, sized to absorb partial energy before secondary MOV/clamp stages. Use Value: Delivers 1500 W peak power handling in compact DO-215AB footprint - enabling high-density PCB layout while meeting IEC 61000-4-5 Level 4 (4 kV) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T | Same VWM (24 V) and PPPM (400 W), but lower 400 W rating and SMA (DO-214AC) package; RθJA = 100 °C/W vs. 75 °C/W. | Lower power handling limits use to sub-500 W surge environments; less suitable for automotive load dump where 1500 W is required. | Select SMAJ24A-E3/57T only when board space allows larger SMA footprint and thermal budget permits higher junction rise. |
| SMCJ24A-M3/57T | Same VWM (24 V), higher PPPM (3000 W), identical DO-215AB (SMCG) package; VC = 38.9 V same, but IPPM = 77.2 A. | Higher surge capacity supports harsher environments (e.g., commercial vehicle alternators); may require revised PCB copper area for thermal management. | Choose SMCJ24A-M3/57T when future-proofing for higher-energy threats or when system-level testing exceeds 1500 W requirements. |
Compared with SMAJ24A-E3/57T and SMCJ24A-M3/57T, SMCG24A-M3/57T delivers optimal balance of 1500 W surge capability, AEC-Q101 qualification, halogen-free compliance, and thermal efficiency (75 °C/W) in the industry-standard DO-215AB footprint - making it ideal for cost-sensitive yet reliability-critical 24 V automotive and industrial designs.
Availability
SMCG24A-M3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive I/O protection, and telecom remote radio unit DC feed applications requiring stable component supply, AEC-Q101 traceability, and halogen-free manufacturing compliance.
Supply support for SMCG24A-M3/57T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and power MOSFETs with emphasis on reliability, ruggedness, and application-specific qualification.
The SMCG series is engineered for high-energy transient suppression in automotive and industrial environments, targeting applications demanding AEC-Q101 validation, low-profile SMT packaging, and precise clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of SMCG24A-M3/57T at its rated peak pulse current?
The SMCG24A-M3/57T has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated 10/1000 µs peak pulse current of 38.6 A. This value is measured per standard test conditions on minimum recommended pad layout and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG24A-M3/57T maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is SMCG24A-M3/57T qualified for automotive applications?
Yes, SMCG24A-M3/57T is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. This qualification confirms its suitability for automotive powertrain and chassis applications such as engine control units and ADAS camera modules. The SMCG24A-M3/57T also carries the HM3 suffix variant (SMCG24AHM3/57T) for full AEC-Q101-compliant halogen-free versions.
What does the "M3" suffix indicate in SMCG24A-M3/57T?
The "M3" suffix in SMCG24A-M3/57T denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD201 Class 2 whisker resistance. It distinguishes the part from "E3" (RoHS-compliant but not halogen-free) and "HM3" (AEC-Q101 qualified + halogen-free) variants. The SMCG24A-M3/57T is intended for industrial and consumer applications where halogen-free materials are mandated but full automotive qualification is not required.
How does SMCG24A-M3/57T compare to SMAJ24A in terms of surge handling capability?
SMCG24A-M3/57T delivers 1500 W peak pulse power (PPPM) versus 400 W for SMAJ24A-E3/57T - a 275 % increase - due to its larger DO-215AB package and optimized thermal path (RθJA = 75 °C/W vs. 100 °C/W). Both share 24 V VWM and similar VBR, but SMCG24A-M3/57T sustains higher IPPM (38.6 A vs. 12.3 A) and is rated for automotive load dump per ISO 7637-2, whereas SMAJ24A is limited to lighter-duty industrial transients. The SMCG24A-M3/57T thus enables more robust protection in demanding environments.
Can SMCG24A-M3/57T be used in bidirectional configurations?
No - SMCG24A-M3/57T is a unidirectional TVS diode, identified by its cathode band marking. For bidirectional operation, the equivalent part is SMCG24CA-M3/57T (with CA suffix), which provides symmetrical clamping in both polarities and no polarity marking. The SMCG24A-M3/57T's unidirectional structure allows lower leakage (<1 µA at 24 V) and tighter VBR tolerance than its bidirectional counterpart, making it preferred for DC rail protection where polarity is fixed.
SMCG24A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG24A-M3/57T FAQ
1.How can I place an order for SMCG24A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24A-M3/57T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCG24A-M3/57T reliable?
The price and inventory of SMCG24A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG24A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG24A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24A-M3/57T?
SMCG24A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24A-M3/57T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCG24A-M3/57T?
For technical support, including SMCG24A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24A-M3/57T requirements.
6.How does Aetrix verify that SMCG24A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG24A-M3/57T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCG24A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG24A-M3/57T?
All SMCG24A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24A-M3/57T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCG24A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG24A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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